correctPlus vs Train Clock
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
correctPlus
This app provides a wide variety of sound effects for Japanese language lessons and conversation practice. It's designed to be useful for educators and learners in various fun situations beyond the classroom.
- Sound effects for class activities
- Conversation practice sounds
- Wide variety of sounds
- Useful in fun situations
- Designed for Japanese teachers
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Iβm a Japanese teacher. This app collects sound effects that I always wished I had for class activities and conversation practice. With a wide variety of sounds, you can use it not only in lessons but also in many fun situations.
Train Clock
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This is an app that helps you learn how to read a clock. The minute hand is a Shinkansen, the hour hand is a conventional train, and the second hand is a steam locomotive. The trains are displayed randomly. When you tap the Shinkansen icon at the bottom of the screen, the Shinkansen used as the minute hand changes to another Shinkansen. When you tap the conventional train icon, the train used as the hour hand transforms into another train. At the top of the screen, trains stop at a station at random. Every two minutes, a train departs.
Screenshots
Verdict
The clearest difference is ads: Train Clock at none against correctPlus's shown. Train Clock also leads on iOS requirement (13.0 vs 17.6). correctPlus's advantage is update cadence (every 7 months vs every 23 months). On price, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
correctPlus ships an update every 7 months, Train Clock every 23 months. The most recent releases landed on July 21, 2026 and September 11, 2026 respectively.
| Parameter | correctPlus | Train Clock |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | β |
| Update frequency | Every 7 months β better | Every 23 months |
| Ads | Yes | No β better |
| In-app purchases | No | No |
| Monetization | Ad-supported | β |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 17.6 | 13.0 β better |
| Further details β not scored | ||
| Size | 10 MB | 143 MB |
| Age rating | 4+ | 4+ |
| Developer | hiromu izuwa | hiroyuki uchida |
In-app purchases
correctPlus
No in-app purchases
Train Clock
No in-app purchases
Questions
Is correctPlus free?
Is Train Clock free?
Do correctPlus or Train Clock have ads?
Which is updated more often, correctPlus or Train Clock?
Other comparisons
